Suspending device for electric lamps



E; O. DAWSON.

(No Model.)

SUSPENDIN G DEVICE FOR ELECTRIC LAMPS.

No. 416,447. Patented Dec, 3, 1889.

UNITED STATES PATENT OFFICE.

EUGENE C. DAIVSON, OF GREELEY, COLORADO.

SUSPENDING DEVICE FOR ELECTRIC LAMPS.

- SPECIFICATION forming part of Letters Patent No. 416,447, dated December 3, 1889.

Application filed March 6, 1889- Serial No. 302,184. (No model.)

To all whom it may concern.-

Be it known that I, EUGENE O. DAWSON, of Greeley, in the county of Weld and State of Colorado, have invented a new and useful Improvement in suspending Electric Lamps; and I do hereby declare that the following is a full, clear, and exact description of the same.

In the drawings, Figure l is 'a sectional view through the counterbalance weight, some of the parts being in side elevation. Fig. 2 is a similar view of a modification.

In the drawings, A is the lamp, which may be an arc lamp or the incandescent shown.

B is the cord by which the lamp is suspended and in which the conductors are placed and insulated from each other. The pulleys around which the rope is directed are shown at h h, the former being the upper, held in fixed bearings in a suitable bracket or disk 7L2, and the other being the movable one, which is journaled in the movable counterbalance-Weight H. The counterbalance weight is formed of a shell, and is provided with an opening, through which shot may be introduced to accurately adjust the counterbalance-weight for the lamp. The shell has an upward extension A and within this the pulley h is j ournaled. Plates 1 extend across within the extension for this purpose. A tube a is also provided within the weight, through which the suspending-rope passes, and the lower end of this tube is directly beneath the center of the weight and in line with the centers of the pulleys, so that the suspendingrope passes to the lamp in direct line with these centers. The rope is secured at the point 2 to the ceiling or bracket, and from thence it extends downwardly beneath the pulley h, then upwardly around the pulley h, and then to the lamp, through the weight. The conducting-wires at the point 2 are connected in any suitable manner with the line. The operation of the device is obvious, as when the lamp is raised and lowered the weight will moveupon the cord and support the lamp in any position.

In Fig. 2 I show means by which friction upon the rope maybe applied to aid the counterbalance-weight. Within the shell rollers e (Z are located at a slight distance apart, and in-line with the space between these is an adjustable roll or sheave b, from which a screw-threaded shank extends to the outside andis provided witha handle e. The rope passes into contact with these pulleys,

and by adjusting the roller 1) toward or from between the weight and the point of support,

more may be used if desired.

I claim as my invention 1. In combination, the lamp, the suspending-cord, the fixed pulley, and the weight carrying a pulley and having a guide-tube for the cord, said guide-tube being inclined with its upper end to one side of the weight-pulley and the center of the weight and the lower end centrallybencath the weight-pulley, substantially as described.

2. In combination with a lamp and its suspending-cord, a hollow weight having movement upon said cord, the said weight carrying with it a friction-adjusting device consisting of the bearings c d'for the cord, and the adj ustable roller arranged to press upon the cord, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

E. o. DAwsoN.

Witnesses:

J. L. ARTHUR, GEO. M. homes. 

